• 文献标题:   Continuous "Snowing" Thermotherapeutic Graphene
  • 文献类型:   Article
  • 作  者:   SUN YY, CHEN ZZ, GONG HP, LI XQ, GAO ZF, XU SC, HAN XD, HAN B, MENG XW, ZHANG J
  • 作者关键词:   graphene, microwave thermal therapy, scalable production
  • 出版物名称:   ADVANCED MATERIALS
  • ISSN:   0935-9648 EI 1521-4095
  • 通讯作者地址:   Peking Univ
  • 被引频次:   0
  • DOI:   10.1002/adma.202002024 EA MAY 2020
  • 出版年:   2020

▎ 摘  要

Finding the best applications of graphene, and the continuous and scalable preparation of graphene with high quality and high purity, are still two major challenges. Herein, a "pulse-etched" microwave-induced "snowing" (PEMIS) process is developed for continuous and scalable preparation of high-quality and high-purity graphene directly in the gas phase, which is found to have excellent thermotherapeutic effects. The obtained graphene exhibits small size (approximate to 180 nm), high quality, low oxygen content, and high purity, together with a high gas-solid conversion efficiency of approximate to 10.46%. Considering the intrinsic characteristics of this high-purity and small-sized biocompatible graphene, in particular the low-frequency microwave absorption property as well as the good thermal transformation ability, a graphene-based combination therapeutic system is demonstrated for microwave thermal therapy (MTT) for the first time, exhibiting a high tumor ablation rate of approximate to 86.7%. This is different from the principle of ions vibrating in a confined space used by current MTT sensitization materials. Not limited to this application, it is foreseen that this PEMIS-based high-quality graphene will allow the search for further suitable applications of graphene.